Question

A random sample of n = 25 is selected from a normal population with mean μ...

A random sample of n = 25 is selected from a normal population with mean

μ = 102

and standard deviation

σ = 11.

(a)

Find the probability that

x

exceeds 107. (Round your answer to four decimal places.)

(b)

Find the probability that the sample mean deviates from the population mean μ = 102 by no more than 2. (Round your answer to four decimal places.)

You may need to use the appropriate appendix table or technology to answer this question.

Math   Statistics-And-Probability   
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